<?php
/**
 * Copyright 2011  SURFfoundation
 * 
 * This file is part of ESCAPE.
 * 
 * ESCAPE is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * ESCAPE is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with ESCAPE.  If not, see <http://www.gnu.org/licenses/>.
 * 
 * For more information:
 * http://escapesurf.wordpress.com/
 * http://www.surffoundation.nl/
 * 
 * Contact: d.vierkant@utwente.nl
 * 
 * @license http://www.gnu.org/licenses/gpl.html GNU GPLv3
 */
?>
<?php
/**
 * RDF util
 * 
 * Provides utility functions.
 */
class simplerdf_Util
{
	/**
	 * Guess the type of an object.
	 * @param string $object object value
	 * @return string object type (uri, bnode or literal)
	 */
	public static function guessType($object)
	{
		if(preg_match('/^[a-z0-9]{2,}\:[^\s]+$/is', $object))
		{
			$type = 'uri';
		}
		else if(preg_match('/^_\:[^\s]+$/is', $object))
		{
			$type = 'bnode';
		}
		else
		{
			$type = 'literal';
		}
		
		return $type;
	}
	
} 